* {
  scroll-behavior: smooth;
}
.fly-to-top {
  position: fixed;
  bottom: 100px;
  right: -35px;
  transform: translateY(0);
  width: 143px;
  height: 85px;
  background: url(src/assets/space-to-top.png);
  background-position: 0px -44px;
  z-index: 99;
}
.fly-to-top:hover {
  animation: back 0.5s steps(7) infinite;
}
#fly-to-top-id {
  display: none;
}
@keyframes back {
  from {
    background-position: 1000px -44px;
  }
  to {
    background-position: 0px -44px;
  }
}
